Machine for treating paper



March 25, 1941.

P. W. CHAPMAN ETAL IIACHINE FOR TREATING PAPER Filed Nov. 2; 19:8

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MACHINE FOR TREATING PAPER Filed Nov. 2, 1938 2 Sheet -Shee t 2 fizz/Ens.- .Ercz ml Mf/zapmarz Oscar .A'. JJOuI-eZ' av-wzgy Patented Mar. 25, 1941 UNITED STATES PATENT MACHINE FOR TREATING Percival W. Chapman and J ohn" H. Bell, Norwich,

and Oscar A.. Jouret, Moosup, Conn.,assignors to The Lester & Wasley 00., Inc., Norwich, Conn, a corporation of Connecticut Application November 2, 1938, Serial No. 238,428

1 Claim.

The present invention relates to improvements in machines for treating paper, cardboard and the like and is directed particularly to an improvement in perforating paper or other similar material.

In the perforation of paper the perforations are generally made by punching, as for example in the Hicks Patent No. 622,682, in which the cooperating rollers between which the paper to be perforated is to be passed have cooperating prongs and slots which form the desired shape of perforation by. the shape of the prong. Such apparatus is satisfactory where the perforations extend transversely of the web of paper passing through the machine. Where the perforations extend longitudinally, as for example, to provide for subsequent tearing of the web longitudinally, such an arrangement is impractical, since it will 9 not perforate the paper in such a manner as to leave a substantially smooth torn edge. One of the principal features of the present invention is to provide for perforating a paper web longitudinallyv thereof.

slitting means in which two annular disks rotate on parallel axes, and the peripheries of the disks overlapping provide for cutting paper, are well known, but invariably these disks are mounted rigidly in axial relation to each other to 30 assure a suitable cutting of the paper. A further feature of the present invention is to mount a perforating or slitting cutter so that it will be held resiliently against the cooperating cutter and assure a positive cutting action, since the cutting 3 edges will be in proper engagement with each other.

In connection with this resilient mounting of the perforating or slitting structure, the present invention also provides for adjustment of the perm forator or slitter relative to other perforating, slitting, creasing or scoring structures, so that the transverse spacing of the perforations, slits, scores or creases on the web of the paper may be adjusted to any extent.

4-: Other and further objects and advantages of the invention will hereinafter more fully appear from the following description taken in connection with the accompanying drawings in which Fig. l is an end elevation of a machine embodying the invention.

Fig. 2 is a front elevation of the machine of Fig. 1 with the table removed.

Fig. 3 is a plan view of the machine of Fig. 1.

Fig. 4 is a fragmentary sectional view along the 55 line 4--4 of Fig. 2.

Like reference characters refer'to like parts in the different figures.

With reference to Figs. 1 and 2, the machine has spaced uprights I and 2 in ,which is journalled a, horizontal shaft 3 having mounted onthe end 5 thereof. a driving pulley 4. Directly abovethe shaft3 is a shaft 5, the ends of which are'j'our-rnalled in boxes 6 and l, vertically .s'lidable" in guideways 8, Fig, 1, provided by the uprights. I A coil spring 9 urges each of the boxes upwardly 1'0 and an adjustable clamping screw l0, positioned in a cross bar I l above each of the boxes, provides for adjustment of the spacing between the 1pm allel shafts 3 and 5. Thex'shaft 3 has'collars 3,. applied thereto directly outside of the uprights l and 2 to hold the shaft against endwi'semove ment, and similar collars 5' are provided on the shaft5. I,

The shafts 3 and 5 have cooperating feed rollers l2 and l 3 thereon, one of which has a rubber ring '20 I 4 extending therearound. The ring is 'en'gage able with the periphery of the .otherroller for rotation of the shafts in unison. 'In thes'truc ture shown, the shafts 3 and 5 have other similarfeed rollers l2 and [3, the latter having-a'rubberl ring M for more positive rotation of the shafts, and for advancing the sheet or web through the. machine. I A

As shown in Figs. land 3, a table I3 is supported on brackets l8 secured to the same', su port as the uprights l and 2, and has its up surface substantially in line with thepointfof contact between the rubber rings 14 and 14" j the cooperating feed rollers l2 and l2, and paper, V or other material, is fed from this table unde neath projecting arms 19 extending fro'ma sha 20 turnable in lugs 2| and 2|" onthe sides of the" table. The ends of the arms [9 extend between and beyond the shafts 3 and 5, as shown in Fig. 3. The lug 2| forms a paper guide and is adjustable laterally on the table l8 by means of screws 22 engaging in slots 23 in the lug.

Arms 24 secured to a shaft 25 journalled in projecting elements 26 on the uprights l and 2 on the delivery side of the device have their free ends extending inwardly between the shafts 3 and 5 for supporting paper, or other material, as it is discharged from the device. A set screw 21 holds the shaft 25 in adjusted position and a set screw 21' holds each arm in adjusted position on the shaft.

For perforating the paper passing between the shafts 3 and 5 the former has therein a disk 28 having an integral hub 29, the disk being held in position by a set screw 30. The shaft 5 has a disk 3| slidable thereon and having an integral hub 32, one surface 33 of the disk being beveled to form an outer circumferential cutting edge 34. The edge, is provided with spaced notches 35, Fig. 4, which are deep enough so that the bottoms of the notches do not overlap the outer edge of the disk 28 when the machine is in operative position. Thus, as the paper or other material passes between the shafts, the action of the cut- 1 ting edge 34 in cooperation with the outer periphery of the disk 28 performs a shearing operation on the paper, leaving uncut the portions where the notches 35 are located, thereby performing a perforating operation on the paper.

is The disk 23 may have a beveled surface 29. to

provide a sharp cutting edge, if desiredv The disk 3| is held resiliently against the disk 28 by springs 36 located between the hub 32 and a collar 31 adjustable on the shaft 5, but nor- 20 A pin 35 e tending axially from the collar 3'! engages in a recess 40 in the hub 32 to assure a rotation of the disk 3| and collar 3! in unison with the shaft ,5.

Since the disk 3| and collar 31 are slidable on the shaft 5, and since the disk 28 is adjustable on the shaft 3, the position of the perforating structure axially of the shafts may be adjusted to control the position of the perforations relative to the edge of the paper. The position of the edgeof the paper is controlled by the guiding lug 2| as will be apparent. Adjustment of the collar 31 toward or away from the disk 28 varies the tension of the spring 36 and thus the axial pressure of the disk 3| against the disk 28.

For slitting a web of paper passing through the device, the shaft 3 carries a disk 4| having an integral'hub 42, said disk being of a diameter to assure an. overlapping between the peripheral 40 edge of this disk and a similar disk 43. The

disk 43 has an integral hub 44 adjustable on the shaft 5. The two disks are placed in sidewise contact, as shown. A collar 31' normally held against movement on theshaft by a set screw 45 38' carries a pin 39 engageable in a recess 40' in the hub 44 to assure a rotation of the disk 43 with the shaft 5. Springs 36' urge the disk 43 toward the right,"Fig. '2, to hold the disks 4| and 43 against each other during a slitting operation. 50 The cooperating disks 28 and 3| constitute cutting disks which rotate in unison for perforating the paper or other material passing through the device. The disks are held resiliently against each other by the sprin 36 and since the disk .5 3| is notched in its periphery, the resultant action on the paper is one of perforating with uncut sections where the notches occur. Similarly mally held in fixed position by a set screw 38.

the disks 4| and 43 constitute cutting disks whose outer edges overlap and which slit the paper passing through the machine, these disks being resiliently urged against each other by the spring 36'.

In addition to the perforating or slitting structures above described, the machine may incorporate, at the same time, a structure for performing a scoring or creasing operation. To this end, the shaft 3 may have thereon a disk 45 having a circumferential groove 46 in its outer cylindrical surface 41 to cooperate with a projecting V-shaped creasing edge 48 on the periphery of a disk 49 secured, as by a set screw 50, on the shaft 5. The disk 45 is held against rotation on the shaft 3 by a set screw 5|.

' For scoring a web passing through the device, the shaft 3 may have a disk 52 secured thereon, as by a set screw 53 and presenting a substantially cylindrical outer surface 54 to cooperate with a peripheral scoring edge 55 on the outer periphery of a disk 56 secured against rotation on the shaft 5 by a set screw 51. Obviously, the diameter of the several disks are so controlled that the edge 48 will enter the notch 46 for creasing the web or sheet and the edge 55 will be spaced from the cylindrical surface 54 a distance materially less than the thickness of the web for scoring the web or sheet.

It will be understood that any one or more of the perforating, scoring, or creasing devices may be used separately or in combination with any of the other devices dependent upon the operation or operations to be performed at one time on the web or sheet of paper or other material passing through the device. In any event the several devices are adjustable for changing the spacing of the several operations performed. Obviously, two or more perforating devices as above described may be utilized for forming spaced lines of perforations.

We claim:

In a device for perforating paper or the like, a pair of parallel rotary shafts, a cutting disk on each shaft, said disks having their outer edges overlapping and one of said disks having spaced peripheral notches radially deeper than the amount that the cutting disks overlap, means for adjusting one of said shafts toward or away from the other, and driving means for rotating said shafts in unison, said means including a resilient ring on one of said shafts having driving engagement with the other shaft.

PERCIVAL W. CHAPMAN. JOHN H. BELL. OSCAR A. JOURET. 

